933afa9761
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185597 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// type_traits
|
|
|
|
// template <class T, class... Args>
|
|
// struct is_constructible;
|
|
|
|
#include <type_traits>
|
|
|
|
struct A
|
|
{
|
|
explicit A(int);
|
|
A(int, double);
|
|
#if __has_feature(cxx_access_control_sfinae)
|
|
private:
|
|
#endif
|
|
A(char);
|
|
};
|
|
|
|
template <class T>
|
|
void test_is_constructible()
|
|
{
|
|
static_assert( (std::is_constructible<T>::value), "");
|
|
}
|
|
|
|
template <class T, class A0>
|
|
void test_is_constructible()
|
|
{
|
|
static_assert( (std::is_constructible<T, A0>::value), "");
|
|
}
|
|
|
|
template <class T, class A0, class A1>
|
|
void test_is_constructible()
|
|
{
|
|
static_assert( (std::is_constructible<T, A0, A1>::value), "");
|
|
}
|
|
|
|
template <class T>
|
|
void test_is_not_constructible()
|
|
{
|
|
static_assert((!std::is_constructible<T>::value), "");
|
|
}
|
|
|
|
template <class T, class A0>
|
|
void test_is_not_constructible()
|
|
{
|
|
static_assert((!std::is_constructible<T, A0>::value), "");
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test_is_constructible<int> ();
|
|
test_is_constructible<int, const int> ();
|
|
test_is_constructible<A, int> ();
|
|
test_is_constructible<A, int, double> ();
|
|
test_is_constructible<int&, int&> ();
|
|
|
|
test_is_not_constructible<A> ();
|
|
#if __has_feature(cxx_access_control_sfinae)
|
|
test_is_not_constructible<A, char> ();
|
|
#else
|
|
test_is_constructible<A, char> ();
|
|
#endif
|
|
test_is_not_constructible<A, void> ();
|
|
test_is_not_constructible<void> ();
|
|
test_is_not_constructible<int&> ();
|
|
}
|